More than ten years ago, the research object of ultrafine powder materials was more than 1um powder. In recent years, the research of ultrafine powder materials has progressed to nanometer level. As the particle size decreases, its own performance is enhanced, and the optical, electrical and magnetic properties are integrated. For example, the strength of nano-piezoelectric ceramics developed by Japan Electronics Corporation is three times that of traditional piezoelectric ceramics. Palode air mill and air classifier can reach D97=0.5um, which is widely used in many fields such as medicine, food, chemical industry, mineral industry and military industry.
- High purity
The purpose of high purity is to realize the characteristics of the substance itself and prevent the interference of foreign impurities, such as optical, electrical, magnetic and superconducting materials of fine ceramics. High-purity products can produce tremendous value-added. The price of 99.998% ZrO 2 is more than 300 times that of ordinary refractories, more than 50 times that of electronic materials, Parod high-purity grinding equipment, high-purity airflow mill, high-purity airflow classifier, high-purity ultrafine grinder and high-purity mechanical grinder. The related technology has reached the international leading level, providing you with the best solution. .
- Functionalization and compounding
Functionalization and compounding are the result of people's pursuit of material properties, and also the demand of high-tech development. For example, the magnetic material composed of r-Fe2O3 in a new capillary styrene-diethylene basic ion exchange resin is not only a superparamagnetic material, but also has strong magnetism and good transparency at room temperature. Because of this special function, it shows very good effect in color imaging and printing. Function is the core of materials, and the development of science and technology requires materials with various functions. The purpose of compounding is to artificially endow new functions of materials and improve old functions. For example, adding a small amount of stabilizer in zirconia will greatly improve the strength and toughness, making ZrO2 ceramics, which used to be only refractory materials, a leader in structural ceramics, and greatly improve the fracture strength. Another example is the submicron tin oxide containing antimony oxide, which is not only conductive but also transparent.
Material refinement refers to the refinement of powder properties, such as its particle size, particle size distribution, particle shape, specific surface, pore volume, pore size, crystal phase, conductivity, magnetism, optical absorption, photoconductivity and a series of properties, different powders have different requirements. For example, different crystal phases of calcium carbonate are required for different types of paper, and different shapes of encapsulated SiO2 will produce different effects.
At present, the research and development of inorganic ultra-fine powder materials in China has just started. The research and development of both natural non-metallic mineral processing and synthetic ultra-fine powder started relatively late. In recent years, in the fields of magnetic recording media, electronic ceramics, high-grade paint, ink, paint and so on, more than ten sets of coating and forming production lines using ultra-fine powder as raw material have been introduced, many of which have advanced international level. But up to now, the powder industry has not been established. Ultrafine powder materials are still mainly imported. In addition, there are many research and development units and varieties of ultra-fine powder materials in our country. However, due to many reasons, such as technical difficulties, application fields and product market development, only a few products have been industrialized, and most of them are at the stage of research and development. Therefore, it is necessary to accelerate the development of ultrafine powder materials.
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